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SE9401904D0 - Radiographic Unit - Google Patents

Radiographic Unit

Info

Publication number
SE9401904D0
SE9401904D0 SE9401904A SE9401904A SE9401904D0 SE 9401904 D0 SE9401904 D0 SE 9401904D0 SE 9401904 A SE9401904 A SE 9401904A SE 9401904 A SE9401904 A SE 9401904A SE 9401904 D0 SE9401904 D0 SE 9401904D0
Authority
SE
Sweden
Prior art keywords
cathodes
focal
anode
fine
radiographic unit
Prior art date
Application number
SE9401904A
Other languages
Swedish (sv)
Inventor
Yngve Norhager
Original Assignee
Siemens Elema Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Elema Ab filed Critical Siemens Elema Ab
Priority to SE9401904A priority Critical patent/SE9401904D0/en
Publication of SE9401904D0 publication Critical patent/SE9401904D0/en
Priority to EP95105219A priority patent/EP0685200B1/en
Priority to DE59510340T priority patent/DE59510340D1/en
Priority to US08/450,706 priority patent/US5544216A/en
Priority to JP13447195A priority patent/JP3764510B2/en
Priority to FI952725A priority patent/FI116193B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/52—Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/068—Multi-cathode assembly

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • X-Ray Techniques (AREA)

Abstract

The object (37) under examination is compressed between a plate (33) and the table (3) for irradiation with the prim. X-ray beam from the rotatable anode (4) which has two focal-spot tracks (6, 7) inclined at the same angle and impacted by electrons from four cathodes (8-11). The edges (34, 35) of the beam are defined by coarse and fine apertures (19, 22). The cathodes produce four focal spots (12-15) spaced apart on the anode rim and selected by straight-line movement of the screen (2) contg. the fine aperture (22), by means of the stepping motor (28) and a sighting lamp (31) and mirror (32). <IMAGE>
SE9401904A 1994-06-02 1994-06-02 Radiographic Unit SE9401904D0 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9401904A SE9401904D0 (en) 1994-06-02 1994-06-02 Radiographic Unit
EP95105219A EP0685200B1 (en) 1994-06-02 1995-04-06 X-ray diagnostic apparatus having a plurality of focal points and a movable primary collimator
DE59510340T DE59510340D1 (en) 1994-06-02 1995-04-06 X-ray examination device with several focal spots and a movable primary beam aperture
US08/450,706 US5544216A (en) 1994-06-02 1995-05-25 X-ray examination apparatus
JP13447195A JP3764510B2 (en) 1994-06-02 1995-05-31 X-ray inspection equipment
FI952725A FI116193B (en) 1994-06-02 1995-06-02 Radiographic Unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9401904A SE9401904D0 (en) 1994-06-02 1994-06-02 Radiographic Unit

Publications (1)

Publication Number Publication Date
SE9401904D0 true SE9401904D0 (en) 1994-06-02

Family

ID=20394217

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9401904A SE9401904D0 (en) 1994-06-02 1994-06-02 Radiographic Unit

Country Status (6)

Country Link
US (1) US5544216A (en)
EP (1) EP0685200B1 (en)
JP (1) JP3764510B2 (en)
DE (1) DE59510340D1 (en)
FI (1) FI116193B (en)
SE (1) SE9401904D0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608862A1 (en) * 1996-03-07 1997-09-11 Philips Patentverwaltung X-ray examination device with an X-ray source and an associated aperture unit
GB2341301B (en) * 1998-08-28 2003-04-09 Elekta Ab Collimator for radiotherapy apparatus
US7330529B2 (en) * 2004-04-06 2008-02-12 General Electric Company Stationary tomographic mammography system
EP1623672A1 (en) * 2004-08-04 2006-02-08 Siemens Aktiengesellschaft X-ray apparatus, in particular for a device for x-ray mammography
CN101983034B (en) * 2008-03-31 2013-02-13 皇家飞利浦电子股份有限公司 Fast tomosynthesis scanner apparatus and ct-based method based on rotational step-and-shoot image acquisition without focal spot motion during continuous tube movement for use in cone-beam volume ct mammography imaging
CN115046505B (en) * 2022-07-29 2024-08-02 重庆大学 A high energy electron linear accelerator X-ray focal spot measurement device and method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793417A (en) * 1972-01-05 1973-04-16 Siemens Ag RADIOGRAPHY DEVICE
FR2329068A1 (en) * 1975-10-24 1977-05-20 Radiologie Cie Gle X-ray generator tube with rotating anode - has filament cathode and concentrator, and Soller slots producing rectangular beam
DE3136806A1 (en) * 1981-09-16 1983-03-31 Siemens AG, 1000 Berlin und 8000 München X-RAY EXAMINATION DEVICE
DE3216216A1 (en) * 1982-04-30 1983-11-10 Siemens AG, 1000 Berlin und 8000 München X-RAY EXAMINATION DEVICE
EP0142841A3 (en) * 1983-11-18 1987-04-29 Kabushiki Kaisha Toshiba Aperture device of radiation diagnostic apparatus
EP0166030B1 (en) * 1984-06-15 1988-08-03 Siemens Aktiengesellschaft Primary beam diaphragm for an x-ray diagnostic apparatus for stereoscopic radiographs
US5224145A (en) * 1990-03-28 1993-06-29 Kabushiki Kaisha Toshiba X-ray beam limiting apparatus including pivotable blade
SE9003638D0 (en) * 1990-11-14 1990-11-14 Siemens Elema Ab PRIMARY RADIATION BLENDERS FOR A ROUND GENEROUS
DE4207006C2 (en) * 1992-03-05 1994-07-14 Siemens Ag Computer tomograph
US5308250A (en) * 1992-10-30 1994-05-03 Hewlett-Packard Company Pressure contact for connecting a coaxial shield to a microstrip ground plane
DE4410760A1 (en) * 1993-07-12 1995-01-19 Siemens Ag X-ray tube with an anode and means for displacing the focal point
US5511105A (en) * 1993-07-12 1996-04-23 Siemens Aktiengesellschaft X-ray tube with multiple differently sized focal spots and method for operating same

Also Published As

Publication number Publication date
JP3764510B2 (en) 2006-04-12
EP0685200B1 (en) 2002-08-28
FI952725A7 (en) 1995-12-03
JPH07327966A (en) 1995-12-19
EP0685200A1 (en) 1995-12-06
FI952725A0 (en) 1995-06-02
US5544216A (en) 1996-08-06
DE59510340D1 (en) 2002-10-02
FI116193B (en) 2005-10-14

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